*> 100 Cool Things - http://cobolrocks.codeplex.com/
*> Copyright (c) 2009-2010
*> by Emerson Lopes (emersonlopes@gmail.com)
*>
*> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
*> documentation files (the "Software"), to deal in the Software without restriction, including without limitation 
*> the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and 
*> to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*>
*> The above copyright notice and this permission notice shall be included in all copies or substantial portions 
*> of the Software.
*>
*> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 
*> TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
*> THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
*> CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
*> DEALINGS IN THE SOFTWARE.

CLASS-ID. ConcreteAggregate as "IteratorPattern.ConcreteAggregate"   inherits ClassAbstractAggregate. 
    environment division.
        configuration section.
            repository.
                class  ClassAbstractAggregate          as  "IteratorPattern.AbstractAggregate"
                class  ClassAbstractIterator           as  "IteratorPattern.Iterator"
                class  ClassConcreteIterator           as  "IteratorPattern.ConcreteIterator"
                class  ClassArrayList                  as  "System.Collections.ArrayList"
                class  ClassObject                     as  "System.Object"
                
                property ArrayCount                    as  "Count".
    
    object.                            
        data division.
            working-storage section.
            copy "Types.Book".
            
            01   _items       usage object reference ClassArrayList. 
            
            
        procedure division.
            method-id. NEW.
                procedure division.
                    invoke ClassArrayList "NEW" returning _items
                    
            end method NEW.
            
            method-id. CreateIterator as "CreateIterator" override.   
                data division.
                    linkage section.
                    01    outIterator  usage object reference ClassAbstractIterator.
                
                procedure division returning outIterator.
                    invoke ClassConcreteIterator "NEW" using SELF returning outIterator
                    
            end method CreateIterator.
            
            method-id. CountItems as "Count".   
                data division.
                    linkage section.
                    01    outCount  type SystemInt32.
                
                procedure division returning outCount.
                    move  ArrayCount of _items     to  outCount
                    
            end method CountItems.
            
            method-id. GetItem as "GetItem".
                data division.
                    linkage section.
                    01    inIndex    type SystemInt32.
                    01    outObject  usage object reference ClassObject.
                
                procedure division using inIndex returning outObject.
                    
                    invoke _items "Get_Item" using inIndex returning outObject
            
            end method GetItem.

            method-id. SetItem as "SetItem".
                data division.
                    linkage section.
                    01    inIndex   type  SystemInt32.
                    01    inObject  usage object reference ClassObject.
                
                procedure division using inIndex inObject.
                    
                    invoke _items "Insert" using inIndex inObject
                    
            end method SetItem.
            
    end object.         
END CLASS ConcreteAggregate.

